Adjustable length modular storage device

Abstract

An adjustable length containing device comprises modular, molded polymer members. The containing device members are ribbed and attached to each other by connection flanges and bottom panels. The containing device is used to store and ship heavy, large objects and is used as an underground storage tank.

What is claimed is:  
     
       1. A molded, polymeric septic tank comprising: 
       two top end members, each top end member including two opposing lateral surfaces transverse and integral with an end surface and a top surface, at least one of the top surfaces defining a least one opening therein, wherein each top end member includes six open sides, each open side including integrally formed connection members; and  
       two bottom end members, each bottom end member including two opposing lateral surfaces transverse and integral with an end surface and a bottom surface, wherein each bottom end member further includes six open sides, each open side including integrally formed connection members so that each top and bottom member is attached to an adjacent member at its open sides by the connection members.  
     
     
       2. The molded, polymeric septic tank in accordance with  claim 1  including at least one top center section and at least one bottom center section, the top center section including two opposing lateral surfaces transverse and integral with a top surface and the bottom center section including two opposing lateral surfaces transverse and integral with a bottom surface, the top center section and the bottom center section configured for positioning between respective top end members and bottom end members. 
     
     
       3. The molded, polymeric septic tank in accordance with  claim 1  wherein the opening in the at least one of the top end member surfaces spans between one of the top end surfaces and one of the other top end member top surface and a top surface of a top center section. 
     
     
       4. The molded, polymeric septic tank in accordance with  claim 3  wherein the opening in the at least one of the top end member surfaces spans between the one of the top end member surfaces and the other top end member top surface. 
     
     
       5. The molded, polymeric septic tank in accordance with  claim 1  wherein the opening in the at least one of the top member surfaces is round. 
     
     
       6. A molded, polymeric tank comprising: 
       two top end members, each top end member including two parallel lateral surfaces perpendicular and integral with an end surface and a top surface, at least one of the top surfaces defining a least one opening therein, wherein each top end member includes six open sides, each open side including integrally formed connection members; and  
       two bottom end members, each bottom end member including two parallel lateral surfaces perpendicular and integral with an end surface and a bottom surface, wherein each bottom end member further includes six open sides, each open side including integrally formed connection members so that each top and bottom member is attached to an adjacent member at its open sides by the connection members.  
     
     
       7. The molded, polymeric tank in accordance with  claim 6  including at least one top center section and at least one bottom center section, the top center section including two opposing lateral surfaces transverse and integral with a top surface and the bottom center section including two opposing lateral surfaces transverse and integral with a bottom surface, the top center section and the bottom center section configured for positioning between respective top end members and bottom end members. 
     
     
       8. The molded, polymeric tank in accordance with  claim 6  wherein the opening in the at least one of the top end member surfaces spans between one of the top end surfaces and one of the other top end member top surface and a top surface of a top center section. 
     
     
       9. The molded, polymeric tank in accordance with  claim 8  wherein the opening in the at least one of the top end member surfaces spans between the one of the top end member surfaces and the other top end member top surface. 
     
     
       10. The molded, polymeric tank in accordance with  claim 6  wherein the opening in the at least one of the top member surfaces is round.